19-year-old arrested in September homicide of South Side teen

Alonzo Cantu, 19, was arrested Monday on suspicion of shooting another teen to death on the South Side in September. Detectives believe Cantu had made arrangements to buy an undisclosed item from 15-year-old Sonny Vidales. After Vidales gave him the item, Cantu allegedly shot him to death. (December 24, 2018)

Alonzo Cantu, 19, was arrested Monday on suspicion of shooting another teen to death on the South Side in September. Detectives believe Cantu had made arrangements to buy an undisclosed item from 15-year-old

Alonzo Cantu, 19, was arrested Monday on suspicion of shooting another teen to death on the South Side in September. Detectives believe Cantu had made arrangements to buy an undisclosed item from 15-year-old Sonny Vidales. After Vidales gave him the item, Cantu allegedly shot him to death. (December 24, 2018)

Alonzo Cantu, 19, was arrested Monday on suspicion of shooting another teen to death on the South Side in September. Detectives believe Cantu had made arrangements to buy an undisclosed item from 15-year-old

A 19-year-old San Antonio man has been arrested on suspicion of shooting another teen to death in September, police said.

SWAT officers arrested Alonzo Cantu at his South Side home Monday and charged him with homicide in the Sept. 22 killing of 15-year-old Sonny Vidales, according to San Antonio Police Sgt. MichelleRamos.

Cantu did not say anything as officers escorted him to a police car at Public Safety Headquarters on Monday. He was arrested without incident.

Detectives believe Cantu arranged to buy an undisclosed item from Vidales at the victim’s home on the Southwest Side’s Adolph Street, according to Ramos. After Cantu received that item around 2 a.m., he allegedly shot Vidales through his bedroom window, killing him.

Ramos said police don’t want to identify the item, but it was worth a couple hundred dollars. Ramos said the investigation is ongoing, though there aren’t any other suspects at this time.

The day after Vidales was killed, his family told the Express-News he came out of his room with the gunshot wound and collapsed in front of his 3-year-old sister.